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More Information: Rhododendron 'Humboldt'


R. 'Humboldt' 
  Photo: Diane Weissman

Predominant Flower Color:  Lavender

Flower/Truss Description:  Flower 2" to 3" across, very pale purple with blackish-red markings. Held in ball-shaped truss with 16-20 flowers.

Fragrant:  No

Bloom Time:  Late Midseason

Foliage Description / Plant Habit:  Leaves ovate, 4" to 6" long, dark green. Upright, well-branched plant.

Height:  5 feet in 10 years.

Cold Hardiness Temp:  -20°F  ( -29°C)

Parentage  (Seed Parent x Pollen Parent):  catawbiense x unknown

Elepidote (E) or Lepidote (L):  E

Hybridized or Selected by:  Seidel

Registration Reference:  RHS 58

Glossary of plant description terminology.
Note: Bloom time and 10 year height information are approximate and can vary dependent on weather and growing conditions.
Cold hardiness temperature is also an approximate value.


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